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Official Description

Flap; neurovascular pedicle

© Copyright 2025 American Medical Association. All rights reserved.

Common Language Description

A neurovascular pedicle flap is a specialized surgical procedure that involves the creation of a flap of tissue, which includes skin and underlying subcutaneous tissues, while preserving its blood supply. This technique is essential for covering tissue defects that may arise due to injury, surgery, or other medical conditions. The procedure begins with an incision made over the neurovascular bundle, which contains critical structures such as nerves and blood vessels. During the operation, the surgeon carefully identifies and protects the nerve that innervates the tissue, the artery that supplies blood to the flap, and the vein that drains the flap. This meticulous dissection allows for the mobilization of the tissue flap along with its neurovascular structures. Once the flap is adequately prepared, it is transferred to the recipient site, which may require the flap to be rotated or tunneled beneath adjacent tissues to effectively cover the defect. Finally, the flap is secured in place with sutures, and any secondary defects created by the flap's movement are also repaired, ensuring optimal healing and restoration of function in the affected area.

© Copyright 2025 Coding Ahead. All rights reserved.

1. Indications

The neurovascular pedicle flap procedure is indicated for various conditions where tissue coverage is necessary. The following are specific indications for performing this procedure:

  • Tissue Defects The procedure is performed to cover defects resulting from trauma, surgical excisions, or congenital anomalies.
  • Reconstruction Needs It is indicated for reconstructive purposes, particularly in areas where significant tissue loss has occurred.
  • Wound Healing The neurovascular pedicle flap may be utilized in cases where other methods of wound closure are not viable due to the size or location of the defect.

2. Procedure

The neurovascular pedicle flap procedure involves several critical steps to ensure successful tissue transfer and coverage of the defect. The following outlines the procedural steps:

  • Step 1: Incision An incision is made over the neurovascular bundle, which is the area containing the essential nerve, artery, and vein. This initial incision is crucial for accessing the underlying structures that will be preserved during the flap creation.
  • Step 2: Identification of Structures The surgeon identifies the nerve that innervates the tissue, the artery that supplies blood to the flap, and the vein that drains the flap. This step is vital to ensure that the neurovascular supply to the flap is maintained throughout the procedure.
  • Step 3: Flap Creation The skin and subcutaneous tissue are incised to create the flap. Care is taken to preserve the neurovascular structures while mobilizing the tissue flap. This involves careful dissection to ensure that the blood supply remains intact.
  • Step 4: Mobilization The tissue flap, along with the neurovascular structures, is mobilized. This may involve additional dissection to free the flap adequately, allowing it to be moved to the recipient site without compromising its blood supply.
  • Step 5: Advancement of the Flap The neurovascular pedicle flap is then advanced to the recipient site. This may require the flap to be rotated or tunneled beneath adjacent tissues to effectively cover the defect.
  • Step 6: Securing the Flap Once positioned, the flap is secured with sutures over the primary tissue defect. Additionally, any secondary defect created by the flap's movement is also repaired to ensure proper healing and aesthetic outcomes.

3. Post-Procedure

After the neurovascular pedicle flap procedure, post-operative care is essential for optimal recovery. Patients are typically monitored for signs of adequate blood flow to the flap, which is critical for its survival. Pain management and wound care instructions are provided to prevent infection and promote healing. Follow-up appointments are necessary to assess the flap's viability and to manage any complications that may arise. The expected recovery period may vary depending on the extent of the procedure and the individual patient's health status, but careful adherence to post-operative guidelines is crucial for successful outcomes.

Short Descr NEUROVASCULAR PEDICLE FLAP
Medium Descr FLAP NEUROVASCULAR PEDICLE
Long Descr Flap; neurovascular pedicle
Status Code Active Code
Global Days 090 - Major Surgery
PC/TC Indicator (26, TC) 0 - Physician Service Code
Multiple Procedures (51) 2 - Standard payment adjustment rules for multiple procedures apply.
Bilateral Surgery (50) 0 - 150% payment adjustment for bilateral procedures does NOT apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 2 - Payment restriction for assistants at surgery does not apply to this procedure...
Co-Surgeons (62) 0 - Co-surgeons not permitted for this procedure.
Team Surgery (66) 0 - Team surgeons not permitted for this procedure.
Diagnostic Imaging Family 99 - Concept Does Not Apply
APC Status Indicator Procedure or Service, Multiple Reduction Applies
ASC Payment Indicator Surgical procedure on ASC list in CY 2007; payment based on OPPS relative payment weight.
Type of Service (TOS) 2 - Surgery
Berenson-Eggers TOS (BETOS) P5A - Ambulatory procedures - skin
MUE 2
CCS Clinical Classification 9 - Other OR therapeutic nervous system procedures

This is a primary code that can be used with these additional add-on codes.

20701 Add-on Code MPFS Status: Active Code APC N Removal of drug-delivery device(s), deep (eg, subfascial) (List separately in addition to code for primary procedure)
51 Multiple procedures: when multiple procedures, other than e/m services, physical medicine and rehabilitation services or provision of supplies (eg, vaccines), are performed at the same session by the same individual, the primary procedure or service may be reported as listed. the additional procedure(s) or service(s) may be identified by appending modifier 51 to the additional procedure or service code(s). note: this modifier should not be appended to designated "add-on" codes (see appendix d).
58 Staged or related procedure or service by the same physician or other qualified health care professional during the postoperative period: it may be necessary to indicate that the performance of a procedure or service during the postoperative period was: (a) planned or anticipated (staged); (b) more extensive than the original procedure; or (c) for therapy following a surgical procedure. this circumstance may be reported by adding modifier 58 to the staged or related procedure. note: for treatment of a problem that requires a return to the operating/procedure room (eg, unanticipated clinical condition), see modifier 78.
22 Increased procedural services: when the work required to provide a service is substantially greater than typically required, it may be identified by adding modifier 22 to the usual procedure code. documentation must support the substantial additional work and the reason for the additional work (ie, increased intensity, time, technical difficulty of procedure, severity of patient's condition, physical and mental effort required). note: this modifier should not be appended to an e/m service.
59 Distinct procedural service: under certain circumstances, it may be necessary to indicate that a procedure or service was distinct or independent from other non-e/m services performed on the same day. modifier 59 is used to identify procedures/services, other than e/m services, that are not normally reported together, but are appropriate under the circumstances. documentation must support a different session, different procedure or surgery, different site or organ system, separate incision/excision, separate lesion, or separate injury (or area of injury in extensive injuries) not ordinarily encountered or performed on the same day by the same individual. however, when another already established modifier is appropriate it should be used rather than modifier 59. only if no more descriptive modifier is available, and the use of modifier 59 best explains the circumstances, should modifier 59 be used. note: modifier 59 should not be appended to an e/m service. to report a separate and distinct e/m service with a non-e/m service performed on the same date, see modifier 25.
76 Repeat procedure or service by same physician or other qualified health care professional: it may be necessary to indicate that a procedure or service was repeated by the same physician or other qualified health care professional subsequent to the original procedure or service. this circumstance may be reported by adding modifier 76 to the repeated procedure or service. note: this modifier should not be appended to an e/m service.
78 Unplanned return to the operating/procedure room by the same physician or other qualified health care professional following initial procedure for a related procedure during the postoperative period: it may be necessary to indicate that another procedure was performed during the postoperative period of the initial procedure (unplanned procedure following initial procedure). when this procedure is related to the first, and requires the use of an operating/procedure room, it may be reported by adding modifier 78 to the related procedure. (for repeat procedures, see modifier 76.)
79 Unrelated procedure or service by the same physician or other qualified health care professional during the postoperative period: the individual may need to indicate that the performance of a procedure or service during the postoperative period was unrelated to the original procedure. this circumstance may be reported by using modifier 79. (for repeat procedures on the same day, see modifier 76.)
80 Assistant surgeon: surgical assistant services may be identified by adding modifier 80 to the usual procedure number(s).
82 Assistant surgeon (when qualified resident surgeon not available): the unavailability of a qualified resident surgeon is a prerequisite for use of modifier 82 appended to the usual procedure code number(s).
AS Physician assistant, nurse practitioner, or clinical nurse specialist services for assistant at surgery
E2 Lower left, eyelid
FA Left hand, thumb
GA Waiver of liability statement issued as required by payer policy, individual case
GC This service has been performed in part by a resident under the direction of a teaching physician
GY Item or service statutorily excluded, does not meet the definition of any medicare benefit or, for non-medicare insurers, is not a contract benefit
KX Requirements specified in the medical policy have been met
LT Left side (used to identify procedures performed on the left side of the body)
RT Right side (used to identify procedures performed on the right side of the body)
SG Ambulatory surgical center (asc) facility service
XS Separate structure, a service that is distinct because it was performed on a separate organ/structure
Date
Action
Notes
2013-01-01 Changed Short Descriptor changed.
Pre-1990 Added Code added.
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